Button-blank-cutting machine.



- L. W. HOLUB & P. F. DUSHA.

BUTTON BLANK OUTTING MACHINE.

APPLIGATION FILED JUNE-6, 1910.

999,032. Patented July 25, 1911.

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L. W. HOLUB 11 P. F. DUSHAQ BUTTON BLANK CUTTING MACHINE.

APPLICATION FILED JUNBG, 1910.

999,082. Patented 1111 251911.

2 SHEBTBSHEET 2.

UNITED sTaTas PATENT or uoa.

LOUIS W. HOLUB AND PAUL F. DUST-IA, OF NEW YORK, N. Y., ASSIGNORS TOHOLUB- DUSHA COMPANY, OF SARATOGA SPRINGS, NEW YORK, A CORPORATION OFNEW YORK.

BUTTON-BLANK-OUTTING MACHINE.

To all whom it may concern:

Be it known that we, LoUIs W. HOLUB and PAUL F. DUSHA, citizens of theUnited States, and residents of the city, county, and State of New York,have jointly invented certain new and useful Improvements inButton-Blank-Cutting Machines, of which the following is aspecification.

Our invention relates to improvements in button blank cutting machinesin which a tubular rotating cutter operates in conjunction with thesupport and a simplified and more efiicient blank knockout device andits cooperating spring stop, and the objects of our improvement are:1st. To provide a knockout device which will eject each button blank assoon as it is cut, from the circular cutting tool, into a receptacleseparate from the chips, dust and dirt resulting from the cutting. 2nd.To simplify the knockout device and to bring it into action at theinstant the cutting of the blank is complete, in a way to deliver alight blow upon tl 1e.but ton blank instead of operating defectively bya dead push. 3rd. To make the knockout device operative from the workinglever of the machine by a slight further movement beyond that requiredfor moving the support toward the cutting tool. th. To provideintermittent action for the knockout device, with minimum wear andsimplicity of construction. 5th. To give the knockout rod a long travelwith a slight movement of the hand lever and a positive movement withoutthe use of springs, and to bring the knockout rod back into its firstposition by positive movement, and to provide a cushion rest for thebackward movement and a detaining force at the beginning of the forwardmovement.

Other objects will appear from the hereinafter description.

We attain these objects by the construction illustrated in theaccompanying drawings, in which Figure 1 is a side view of the knockoutmechanism, with the cooperating parts of the machine, with parts insection; Fig. 2 is a side view of the head stock and cutting tool withparts in section; Fig. 3 is a plan View of the spring stop holding inthe position of rest the arm of the knockout mechanism shown in section.

A is the headstock, and A is the tailstock, of a button blank cuttingmachine, both Specification of Letters Patent.

Application filed June 6, 1910.

Patented July 25, 1911.

Serial No. 565,228.

preferably formed integral with the bedpiece B.

C is a tubular cutting tool held by the spring chuck D fitting in theend of the hollow spindle E, in which it is pressed by the nut F. Holesin the spindle E are lettered e e.

H is a clamp on the reciprocating bar I giving an adjustable motionthereon.

I is a hollow reciprocating bar carrying the hollow support 1, againstwhich the shell to be cut is hacked, and by the advancing motion of thereciprocating bar I the shell is pressed against the cut-ting tool Cwhen the button blank is being cut.

L is a gear lever pivoted to the tailstock A, meshing at the upper endin the teeth of the clamp H, by which the clamp and reciprocating bar Iare advanced and withdrawn when the gear lever L is moved one Way or theother. A horizontal hand lever, not shown, toothed at the inner end,meshing with the teeth L on the gear lever L, actuates the gear lever Land through that the reciprocating bar I.

The foregoing are the well-known parts of a button blank cuttingmachine, and associated with these are our improved knockout rod and itsoperating mechanism.

The knockout rod M is within the reciproeating bar I and rests in thehollow support I, and at the outer end is pivoted to the upright leverN, pivoted at its lower end to the bed-piece of the machine and bearingintegral therewith the cam O, by which the lever N is actuated which inturn actuates the knockout rod WI.

The bar P is pivoted at the lower end of the gear lever L and bears atthe other end three rollers, l, 2, 3, of which the roller 1 supports thebar P on the bed-piece Q. The roller 2 is so placed that it contactswith the cam 0 when the cutting tool C has cut through the meat of theshell and is about to cut the rough softer outside part of the shell.After the cam O has been moved by the roller 2 to the right, giving thearm N and the knockout rod M a long throw, the cam O is in position tocontact also with the roller 3 without lost motion. At that point theupper end of the arm N and the knockout rod M have reached their extrememotion to the right and have come to rest. The reverse motion of thehand lever, not shown, actuating the lever L, and with it the bar P,returns all the parts to the position shown in the drawing by themovement of the roller 3 on the cam O by a positive movement, withoutthe connection of springs. The arm N is preferably shaped as in thecross section shown in F ig. 2, so that its web may be clasped betweenthe members of the flat spring R and thereby brought to a soft rest bythe tension of the spring.

The operation of our improved machine is as follows: The space betweenthe cutting tool C and the support I is such as to receive the shell tobe cut in button blanks, and thereupon by the hand lever of the machinenot shown the gear lever is moved so as to move the reciprocating bar Ibearing the support I toward the revolving cutting tool, and a blank isthereby cut, with the appropriate pressure communicated by the handlever until the outer soft part of the shell which is against thesupport I is reached, whereupon the pressure for the best results mustbe less, or the cutting tool will break through the soft flaky outsidepart of the shell and split off material which goes to waste, and alsomay make a defective button blank.

Unskilled labor is not adequate to this time release of pressure, andour improved machine accomplishes this in a special way with certainty.Then this point is reached the cam O is in contact with the roller 2 andis about to move the arm N to bring the knockout rod M into play; butthe hand pressure on the working lever is now required to pull the leverM out from the clasp of the spring R, and while this is being done thepressure on the support I against the shell is less. At this point thecutting through the soft flaky outside part of the shell is being done.

The cam device on the lever N gives the lever N and the knockout rod anintimate motion, a quick long throw of the knockout rod, which deliversa light tap to the button blank which is cut out, located within, and atthe cutting end of the tubular cut ting tool C the blank is thus ejectedfrom the cutting tool and followed up by the knockout rod until itreaches the holes 6 e in the hollow spindle E, through which the buttonblank passes to the proper receptacle, separate from the dust and chipsof the cutting tool some distance away.

A hood, not shown, may be provided around the hollow spindle E to directthe button blanks into the receptacle. By the reverse motion of the handlever not shown, the knockout mechanism is brought to the position shownin the drawings and a new cutting proceeds.

The movements of the machine are rapid, and it will be seen that ourimprovements accomplish all the objects hereinbefore recited and enableus to avoid the use of springs to return the knockout rod to its firstposition, the tension of which must be overcome by the hand of theoperator, with gradually increased fatigue when the thousands ofmovements a day are considered. The principal moving parts of ourknockout device are roller movements. The bearing surfaces around theknockout rod are only such as are required to support and guide it. Itsmovements are all positive; there is no lost motion; the rest iscushioned; and by the slight blow in place of a push on the button blankdelivered by the knockout, the muscular effort of the operator iseconomized.

Other mechanical equivalents for the quick intermittent motion of theknockout rod may be employed, and we have constructed most of them, butthe construction given is best.

The knockout device may be arranged on the other side of the machine inthe hollow spindle and tubular cutting tool to eject the button blank inthe opposite direction or through the hollow support.

Having now described our invention, what we claim as new and desire tosecure by Letters Patent is:

In a button blank cutting machine, a knockout device comprising aknockout rod, an actuating arm, means for giving it intermittent motionadapted to give it quick movement at the instant of contact with thebutton blank, and means for cushioning the movement of the knockoutdevice at the beginning and at the end of every cycle.

In witness whereof, we have hereunto set our hands, at the city, countyand State of New York, this third day of June, 1910.

LOUIS W. HOLUB. PAUL F. DUSHA.

In presence of LYDIA M. NEKARDA, JOHN J. RANAGAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

